Exercise 5-5 (Algo) Effect of inventory cost flow on ending inventory balance and gross margin LO 5-1 [The following information applies to the questions displayed below.] The Shirt Shop had the following transactions for T-shirts for Year 1 , its first year of operations: During the year, The Shirt Shop sold 720 T-shirts for $15 each. Exercise 5-5 (Algo) Part b b. Compute the difference in gross margin between the FIFO and LIFO cost flow assumptions